200415935 玖、發明說明： 【發明所屬之技術領域】 本發明相關於一種場致發光裝置，其包含一基材及一多 層物體’該物體包含至少一第一電極、一場致發光層及一 第二電極。 【先前技術】 各種基於不同原理之電子式驅動顯示系統的實施例係 為人所知，並且廣泛地使用。 根據該等原理之一的應用係由有機發光二極體所製 成’即所謂OLEDs，該二極體可當作為光源使用。有機發 光二極體係由複數個功能層所組成。在，，菲律賓研究期刊， 1998, 51，467”中，提供0LED之典型結構的描述。一典型 結構包含一 IT0(氧化銦錫）層，該層可當作為該透明電極 (正極）；一傳導聚合物層；一場致發光層，即發光材料層， 特別係發光聚合物；及一金屬電極，較佳地係為具有低功 (work)功能的金屬（負極）。該結構通常係放置在一基材 上，該基材通常係為玻璃。該產生的光線透過該基材到達 °亥觀Μ者。在該場致發光層中包含一發光聚合物之〇leD 也稱作為polyLED或PLED。 為了改良該光線輸出或是該明亮度（luminance)，有機 LED尚包含數層功能層。該led係描述在例如US 2001/〇〇 19242 中。一功能層係包含例如一濾色器。 【發明内容】 本發明的目的之一係要提供具有高度光線輸出之改良 86227 200415935 場致發光裝置，該裝置具有一濾色器，並且能夠以簡單且 快速方式製造。 該目的係利用一種場致發光裝置來達成，該裝置包含一 基材，一多孔層，其與該基材相接；一多層物體，其與該 多孔層相接，並且該物體係包含至少一第一電極、一場致 發光層及一第二電極；及一彩色材料，該材料係至少部分 存在於該多孔層之細孔内。 因為該多孔層具有一低折射率而干擾該内部全反射，所 以該多孔層使得該場致發光裝置之光線輸出之耦合能夠 獲得改良。藉由將一彩色材料導入到該多孔層之細孔内， 便能夠簡單地獲彳卜濾、色器，該濾'色器改變該場致發光裝 置之發光色彩’而改良該日光對比。所具有的優點是該濾 色器的製造並不需要供應另一層。 根據申請專利範圍第2項之良好實施例讓該彩色材料之 吸收性質被調整成該場致發光層所發射之光線的發射頻 譜。 根據申請專利範圍第3到5項之良好實施例讓一具有黑 色矩陣結構及/或一渡色器結構之場致發光裝置能夠簡單 地獲得。 將墨水作為根據申請專利範圍第6項之彩色材料之良好 應用讓該彩色材料能夠容易又快速地導入到該多孔層之 細孔内。另外的優點係屬於該彩色材料能夠在稍後的階段 再導入該多孔層内。这将非登Μ 曰円坆如非吊即癌成本，而依據所使用的 物體’該彩色材料能夠被調整成該多層物體之（發光）性 86227 200415935200415935 (1) Description of the invention: [Technical field to which the invention belongs] The present invention relates to an electroluminescence device including a substrate and a multilayer object. The object includes at least a first electrode, a field electroluminescent layer, and a first Two electrodes. [Prior art] Various embodiments of electronically driven display systems based on different principles are known and widely used. An application according to one of these principles is made of organic light-emitting diodes, so-called OLEDs, which can be used as light sources. The organic light emitting diode system is composed of a plurality of functional layers. In, "Philippine Research Journal, 1998, 51, 467", provides a description of the typical structure of 0LEDs. A typical structure includes an IT0 (indium tin oxide) layer, which can be used as the transparent electrode (positive electrode); a conductive A polymer layer; a photoluminescence layer, that is, a luminescent material layer, particularly a light-emitting polymer; and a metal electrode, preferably a metal (negative electrode) with a low work function. This structure is usually placed on a On the substrate, the substrate is usually glass. The generated light passes through the substrate to reach the viewfinder. The electroluminescent layer contains a OLED which is also called polyLED or PLED. To improve the light output or the brightness, the organic LED still includes several functional layers. The LED system is described in, for example, US 2001/0019242. A functional layer system includes, for example, a color filter. [Abstract] One of the objects of the present invention is to provide an improved 86227 200415935 electroluminescence device having a high light output. The device has a color filter and can be manufactured in a simple and fast manner. This is achieved by an electroluminescence device, which comprises a substrate, a porous layer, which is in contact with the substrate; a multilayer object, which is in contact with the porous layer, and the object system comprises at least one first An electrode, a photoluminescence layer, and a second electrode; and a colored material, which is at least partially present in the pores of the porous layer. Because the porous layer has a low refractive index and interferes with the internal total reflection, the The porous layer enables the coupling of the light output of the electroluminescent device to be improved. By introducing a color material into the pores of the porous layer, a filter and a color filter can be obtained simply. Change the luminous color of the electroluminescence device to improve the solar contrast. The advantage is that the manufacture of the color filter does not need to supply another layer. According to the good embodiment of the second patent application, the color material The absorption properties are adjusted to the emission spectrum of the light emitted by the electroluminescence layer. According to a good embodiment of the patent application scope items 3 to 5, let a black matrix structure and / or a color filter The structured electroluminescence device can be easily obtained. The good application of the ink as the color material according to item 6 of the scope of patent application allows the color material to be easily and quickly introduced into the pores of the porous layer. Another advantage is that The colored material can be re-introduced into the porous layer at a later stage. This will increase the cost of cancer if it is not suspended, and depending on the object used, the colored material can be adjusted to the multilayer object. (Luminous) Sex 86227 200415935
本發明也相關於 一 i〜乃沄，該裝置 包含-基材；—多孔層，其與該基材相接；—多層物體， 其與該多孔層相接，並且該物體係包含至少一一 + 昂' 一 % > -％致發光層及—第二電極；及一彩色材料，該材料係至 少部分存在於該多孔層之細孔内，該彩色材料係利用噴墨 式印刷法來導入該多孔層。 喷墨式印刷法讓一濾色為能夠以簡單、快速及經濟方式 來製造。特別地，該方法能夠讓具有一黑色矩陣及一像素 形狀濾色器結構之場致發光裝置能夠以簡單且快速的方 式來獲得。 本發明之這些方面及其他方面可以參考兩圖示及一範 例清楚地了解及說明。 【實施方式】 如圖1中所示，一場致發光裝置包含一基材1，該基材較 佳地採取透明玻璃板或是透明聚合物薄片（foil)2形式。 在該基材1上配置一多孔層2’該層對於該場致發光穿置所 發出光線係為透明。該多孔層2具有一低折射率，而這導 致改良該場致發光裝置之光線輸出，這係歸諸於内部全反 射受到干擾的事實。該多孔層2之層厚較佳地係在丨到1〇 微米間的範圍内。 在該多孔層2中的細孔大小係處於奈米範圍内，較佳地 係在該20到1 00奈米間的範圍内。該多孔層2較佳地係為一 膠狀層，即係它是從膠體或膠狀溶液中所準備。膠體或膠 86227 200415935 狀溶液係為異質性材料系統，該 i古此私工*〖曰 、、 3非吊微小粒子， k二粒子在光顯微鏡下係不 _ 驊式友Μ丄甘人山 見的’这些粒子係散佈在液 體或風體媒；丨中。這些粒子的 ^ . 又马具有非常鬲的表面質 里比（surface-to-mass ratio)。处里碰 、 一、广4 a ^ 、、、口果’一膠狀層2係由膠體 浴液之非常微小的粒子所組成， 叩A寺粒子的大小#名1 奈米到400奈米之間。或者， ’、 ( ,、 该夕孔層2可以包含氣體膠 (aerogel) 〇 一多層物體與該多孔層2相連接，該多層物體包含至少 一第一透明（較佳地）電極3、—場致發光層4及-第二電極 5。該第-電極3作為該正極而該第二電極$做為該負極。 該等電極3、5係以二維陣列的方式來配置。 該第-電極3可以包含例如p_d〇ped矽或氧化銦錫 (IT0)。該第二電極5可以包含例如諸如鋁、銅、銀或金之 類的金屬、合金或n-doped矽。較佳地，該第二電極5包含 兩個或兩個以上的傳導層。特別較佳地，該第二電極5包 含一第一層為鹼土金屬，像是鈣或鋇，以及一第二層為鋁。 該場致發光層4包含發光聚合物或是微小的有機分子。 該等裝置依據在該場致發光層4中所使用的材料類型，可 以稱作為LEPs(發光聚合物）4p〇iyLEDs或SMOLEDs(微小 分子有機發光二極體）。較佳地，該場致發光層4包含發光 聚合物。對於該發光聚合物的使用，可以由例如p〇ly (p-phenylene vinylene)(PPV)、a substituted PPV、像是 dialkoxy-substituted PPV 或 doped PPV所組成。 或者，該多層物體係包含一些額外層，像是一電洞傳輸 86227 -9- 200415935 層及/或—電子傳輸層…t洞傳輪層係、酉己置在該第一電 極3與該場致發光層4之間。一電子傳輸層係位在該第二電 極5與該場致發光層4之間。兩層較佳地係包含傳導聚合 物。 該場致發光層4係分割成複數個發射出紅光、綠光及藍 光之％色像素σ為了產生彩色光線，在該場致發光層4中 之材料係添加螢光染料，或是發射出彩色光線之聚合物係 用以作為在該場致發光層4中之材料。在不同實施例中， 水合物係使用在該場致發光層4中，該聚合物發射出的 光線係屬於寬廣波長範圍，而在該多孔層2之濾色器結構 係用以從該光線中產生該等三原色（紅、綠或藍色）之任何 一種原色。 當一合適電壓（典型地為數伏特）係施加於該等電極3、5 時，正電荷及負電荷載體係被彈出，然後游移到該場致發 光層4，在该層這些載體會重新組合，因而產生光線。該 光線在抵達該觀賞者之前，先通過該第一透明電極3、該 多孔層2及該基材丨。假如該場致發光層4係添加螢光染 料，則t玄電子-電洞之重新組合所產生之光線會激發該等 染料，而依次地發射出該等三原色之一的光線。 該多孔層2之細孔至少有部分係配置一彩色材料。在本 發明中，該術語“彩色，，包含除了該等一般使用的彩色，如 紅、黃、綠、藍等等之外，還有黑色。假如該多孔層2包 含一彩色材料，則可以獲得一濾色器。較佳的是兩個或兩 個以上之彩色材料係被導入到該多孔層之細孔内。有利 86227 -10- 200415935 地’如同圖2中所示，這會導致將該多孔層2分割成片段及 形成一渡色結構。這些片段的形式係為例如長條及/或 像素。較佳地，該多孔層2包含長條狀及像素狀的片段， 特別較佳的是該等長條狀片段係利用一黑色材料來形 成，而該像素狀片段係由紅、綠、藍色材料來形成。在該 貫施例中，該片段導致一黑色矩陣結構，還有一濾色器結 構在該多孔層2中。該等長條狀片段較佳地係具有寬度為 5〇到100微米。一像素狀片段較佳地係具有大小為2〇〇χ3〇〇 微米。 特別較佳的是該彩色材料係為墨水。一適當墨水通常包 s除了有機溶劑之外’ 一或更多的結合劑、傳導鹽以及假 如有需要的話還有其他辅助劑及添加劑。這些有部分也可 以利用如水般的形式來使用。適當墨水額外地包含顏料或 染料。對於這些染料，可以使用例如C.LAcid Red U8、 C.I.Acid Red 254、C.I.Acid green 25、C.I.Acid Blue 113、 C.I.acid Blue 185 > C.I.Acid Blue 7 ^ C.I.acid blue C-LAcid Black 194。對於這些顏料，可以使用例如 c.l.Pigment Red 177 > C.I.Pigment Red 5 . C.I.Pigment Red 、C.I.Pigment Green 36、C.I.Pigment Blue 209 或 C，I.Pigment Blue 16。在該墨水中之染料或顏料的數量較 佳地係落在相對於該墨水之整體重量的〇·丨到2〇%重量百 分比的範圍之内。 為了製造在該等細孔中含有一或更多彩色墨水之多孔 層2，可以有利地使用噴墨式印刷。喷墨式印刷係一種為 86227 -11 - 200415935 人熟知的方法，該方法係藉由各種基材可利用免於接觸的 方式來塗佈。喷墨式印刷係用於例如製造在液晶顯示勞幕 中的濾色器。 百先，一基材1係配置有一多孔層2，該配置係藉由例如 sol-gel法或旋轉濺鍍法來完成，而該多孔層係由例如二氧 化石夕或金屬氧化物所組成。假如該多孔層2係、為一膠狀 層’例如先準備一如水般的膠狀溶液，之後該溶液係藉由 方疋轉濺鍍法來施加於該基材i。在溫度為i 5〇它到i 8〇。匸的 範圍内乾燥後，便可以獲得堅固地黏著在該基材丨上之透 明多孔層2。 該等墨水係直接地配置在該多孔層2上，這係可能的， 例如因為包含該多孔層2之基材1係存在於噴墨式印表機 中。由於毛細管引力，該墨水至少部分進入到該多孔層2 之細孔内。依據該多孔層2之層厚及在喷墨印刷期間在該 多孔層2上面所沉積的墨水量，該多孔層2中多少有些細孔 會含有墨水。同樣地，該印刷過程之精確度係由該等兩項 係數所決定。該方法具有的優點為後續的乾燥程序係不必 要的，因此可以既快速又經濟地將彩色墨水當作彩色材料 導入到該多孔層2之細孔内。 假如該多孔層2具有一黑色矩陣結構及一濾色器或一濾 色器結構，較佳地要先提供一黑色墨水，以此方式該長條 狀片段會形成一格狀（lattice)。接著，才提供彩色墨水。 依據該場敖發光層4所發射光線的波長及該場致發光裝 置的使用，該多孔層2可以包含一個、兩個或三個不同彩 86227 -12- 200415935 色材料。 雖然本發明之描述係只有關於被動式場致發光裝置，但 7本^明也可以用在主動式場致發光裝置。在主動式場致 發光裝置中，該第一電極具有一像素結構，而每個個別的 像素電極係利用至少兩薄膜電晶體及—電容來驅動。 接下來，本發明之一實施例將會被加以解釋，該實施例 係由一可能實行之範例所組成。 、。如水般的二氧化矽之膠狀溶液具有重量百合比濃度 為 之一氧化矽’該溶液係使用去離子水來稀釋具有粒 =直徑為奈米（LeVasil ©VPAC 4056)之三氧化石夕的膠狀 溶液山。所獲得的如水般的膠狀溶液係通過—具有細孔大小 :、’、1米之薄膜過，慮器。對於該基材i係使用U毫米厚玻 璃該玻璃板係夾在旋轉濺鍍器上，然後以該如水般的 氧^夕膠狀，奋液來塗佈。在該過程中，該基材丨係以2〇〇 rpm旋轉’及在該旋轉過程中，該溶液係藉由紅外線燈來 將之麗乾接著，該塗佈基材丨係放在—烤箱内，然後曝 3麗於15Gt的溫度中^二氧切之多孔層2(緊黏著該基 材Ό具有層厚為2〇〇奈米。 5亥塗佈基材1係導人至|丨嗤$ CTrr i , , ¥ Μ噴墨式印表機，首先，黑色墨水 獲得—黑色矩陣結構之方法來配置在該多孔層2上。 來、工L及綠色墨水係相繼地配置，使得除了該里 色矩陣結構之外還獲得-渡色器結構。—i⑻奈米厚的氧 化銦錫層係、以作為該第—電極3而配置在該多孔層2上，秋 後接著進行架構。接下來，連續…奈米厚的 86227 200415935 polyethyiene dioxythiophene(PD〇T)層（做為該電洞傳導 層）及一 80奈米厚的場致發光層4便可以獲得。該場致發光 層4係分割成發射紅光、綠光及藍光之彩色像素。該等發 射紅光之像素係包含聚[{9-乙基_3,6_雙（2_氛基伸乙稀基） 伸叶峻基}]交替共聚-[2甲氧基乙基己氧基）^心伸 苯基]]，該等發射藍光的像素係包含聚[9,9_二己基第基 -2,7-一基]及該等發射綠光的像素係包含聚[{9 二辛其 -2,7-二伸乙烯基_伸苐基}_交替共聚_{2_甲氧基_5_(2_乙 基己氧基-1，4-伸苯基）}。該等發射紅光的像素係位在該多 孔層2含有紅色墨水之細孔的對面。相同地，該等發射綠 光的像素及該等發射藍光的像素係各別地位在該等多孔 層2含有綠色墨水及藍色墨水之細孔的對面。該多孔層2 含有黑色墨水之長條狀片段係將該等像素分割成三合一 組（triads)，每個三合一組具有一紅色像素、一綠色像素 及一藍色像素。在該場致發光層4上係配置有該第二電極 5，該電極係由一層5奈米厚的鋇層及一層2〇〇奈米厚的鋁 層所組成。 所獲得的場致發光裝置係表現出改良日光對比及該等 原色之高度頻譜飽和度。 【圖式簡單說明】 圖1係為一場致發光裝置之橫斷面圖示；及 圖2說明一在該等細孔内具有彩色材料的分段多孔層。 【圖式代表符號說明】 1基材 86227 -14- 200415935 2多孔層 3 —第一電極 4 一場致發光層 5 —第二電極 -15 - 86227The present invention is also related to i ~ nai, the device includes-a substrate;-a porous layer connected to the substrate;-a multilayer object connected to the porous layer, and the object system includes at least one + Ang 'one% >-% electroluminescent layer and-the second electrode; and a color material, the material is at least partially existing in the pores of the porous layer, the color material is introduced by inkjet printing method The porous layer. The inkjet printing method allows a color filter to be manufactured in a simple, fast, and economical manner. In particular, this method enables an electroluminescence device having a black matrix and a pixel-shaped color filter structure to be obtained in a simple and fast manner. These and other aspects of the invention can be clearly understood and explained with reference to the two figures and an example. [Embodiment] As shown in FIG. 1, a field electroluminescent device includes a substrate 1, which is preferably in the form of a transparent glass plate or a transparent polymer foil 2. A porous layer 2 'is disposed on the substrate 1, and the layer is transparent to the light emitted by the electroluminescence. The porous layer 2 has a low refractive index, and this leads to an improvement in the light output of the electroluminescence device due to the fact that internal total reflection is disturbed. The layer thickness of the porous layer 2 is preferably in a range between 1 μm and 10 μm. The pore size in the porous layer 2 is in the range of nanometers, preferably in the range of 20 to 100 nanometers. The porous layer 2 is preferably a gelatinous layer, that is, it is prepared from a colloidal or gelatinous solution. Colloid or gel 86227 200415935 The solution is a heterogeneous material system, the private worker * 〖,, 3 non-hanging small particles, k two particles are not under the light microscope_ 骅 式 友 Ｍ 丄 甘 人 山 见'These particles are dispersed in liquid or wind media; These particles have a very surface-to-mass ratio. Everywhere, one, four, four, one, four, one, and one fruit, a colloidal layer 2 is composed of very small particles of colloidal bath, the size of the 叩 A 寺 particles # 名 1nm to 400nm between. Alternatively, ', (,, and the porous layer 2 may include aerogel. A multilayer object is connected to the porous layer 2. The multilayer object includes at least a first transparent (preferably) electrode 3,- The electroluminescent layer 4 and-the second electrode 5. The-electrode 3 serves as the positive electrode and the second electrode $ serves as the negative electrode. The electrodes 3 and 5 are arranged in a two-dimensional array. The first- The electrode 3 may include, for example, p-doped silicon or indium tin oxide (IT0). The second electrode 5 may include, for example, a metal, an alloy, or n-doped silicon such as aluminum, copper, silver, or gold. Preferably, the The second electrode 5 includes two or more conductive layers. Particularly preferably, the second electrode 5 includes a first layer of an alkaline earth metal, such as calcium or barium, and a second layer of aluminum. The field The electroluminescent layer 4 contains luminescent polymers or tiny organic molecules. These devices can be referred to as LEPs (light emitting polymers) 4poiyLEDs or SMOLEDs (small molecules) depending on the type of material used in the electroluminescent layer 4. Organic light emitting diode). Preferably, the electroluminescent layer 4 includes a light emitting polymer For the use of the light-emitting polymer, it can consist of, for example, poly (p-phenylene vinylene) (PPV), a substituted PPV, such as dialkoxy-substituted PPV or doped PPV. Alternatively, the multilayer system contains some additional A layer, such as a hole-transport 86227-9-200415935 layer and / or an electron-transport layer ... a t-hole transfer wheel system is placed between the first electrode 3 and the electroluminescent layer 4. An electron The transmission layer is located between the second electrode 5 and the electroluminescent layer 4. The two layers preferably contain a conductive polymer. The electroluminescent layer 4 is divided into a plurality of emitting red, green and In order to generate colored light, the materials in the electroluminescent layer 4 are added with fluorescent dyes, or the polymer emitting colored light is used as the material in the electroluminescent layer 4 In different embodiments, hydrates are used in the electroluminescent layer 4, the light emitted by the polymer belongs to a wide wavelength range, and the color filter structure in the porous layer 2 is used to remove the light The three primary colors (red, green or blue) When a suitable voltage (typically several volts) is applied to the electrodes 3, 5, the positive and negative charge carriers are ejected, and then migrate to the electroluminescent layer 4, where the carriers are Will recombine, thus generating light. The light passes through the first transparent electrode 3, the porous layer 2 and the substrate before reaching the viewer. If the electroluminescent layer 4 is added with a fluorescent dye, then The light produced by the t-electron-hole recombination will excite the dyes, and in turn emit light in one of the three primary colors. At least part of the pores of the porous layer 2 is provided with a color material. In the present invention, the term "color" includes black in addition to the commonly used colors, such as red, yellow, green, blue, etc. If the porous layer 2 contains a color material, it can be obtained A color filter. It is preferred that two or more colored materials are introduced into the pores of the porous layer. Favorable 86227 -10- 200415935, as shown in Figure 2, this will cause the porous Layer 2 is divided into fragments and forms a color structure. The forms of these fragments are, for example, strips and / or pixels. Preferably, the porous layer 2 comprises strips and pixels, and particularly preferably The equal-length strips are formed using a black material, and the pixel-shaped segments are formed from red, green, and blue materials. In this embodiment, the segment results in a black matrix structure and a color filter. The structure is in the porous layer 2. The strip-shaped segments preferably have a width of 50 to 100 microns. A pixel-shaped segment preferably has a size of 200 × 300 microns. Particularly preferred The color material is ink. An appropriate ink Water usually contains, in addition to organic solvents, one or more binders, conductive salts, and other adjuvants and additives if necessary. Some of these can also be used in a water-like form. Appropriate inks additionally Contains pigments or dyes. For these dyes, for example, C.LAcid Red U8, CIAcid Red 254, CIAcid green 25, CIAcid Blue 113, CIacid Blue 185 > CIAcid Blue 7 ^ CIacid blue C-LAcid Black 194. For these pigments, for example, clPigment Red 177 > CIPigment Red 5. CIPigment Red, CIPigment Green 36, CIPigment Blue 209 or C, I. Pigment Blue 16. The dye in the ink or The amount of the pigment preferably falls within a range of from 0.1 to 20% by weight relative to the total weight of the ink. In order to produce the porous layer 2 containing one or more colored inks in the fine pores 2 Inkjet printing can be advantageously used. Inkjet printing is a method that is well known to 86227 -11-200415935. This method uses a variety of substrates to avoid The inkjet printing system is used, for example, to manufacture color filters in liquid crystal display curtains. Baixian, a substrate 1 is provided with a porous layer 2, which is provided by, for example, sol-gel This method can be performed by a sputtering method or a spin sputtering method, and the porous layer is composed of, for example, dioxide or metal oxide. If the porous layer 2 is a gelatinous layer, for example, a gelatinous solution such as water is prepared first, and then the solution is applied to the substrate i by a square-row sputtering method. At a temperature of i 5 0 it reaches i 8 0. After drying in the range of 匸, a transparent porous layer 2 firmly adhered to the substrate 丨 can be obtained. The inks are arranged directly on the porous layer 2, which is possible, for example, because the substrate 1 containing the porous layer 2 is present in an inkjet printer. Due to capillary attraction, the ink at least partially enters the pores of the porous layer 2. Depending on the layer thickness of the porous layer 2 and the amount of ink deposited on the porous layer 2 during inkjet printing, some pores in the porous layer 2 will contain ink. Similarly, the accuracy of the printing process is determined by these two factors. This method has the advantage that the subsequent drying process is unnecessary, so that color ink can be introduced into the pores of the porous layer 2 as a color material quickly and economically. If the porous layer 2 has a black matrix structure and a color filter or a color filter structure, it is preferable to first provide a black ink, in this way, the strip-shaped segments will form a lattice. Color ink is then provided. Depending on the wavelength of the light emitted by the field-emitting layer 4 and the use of the electroluminescence device, the porous layer 2 may contain one, two, or three different color 86227-12-200415935 color materials. Although the description of the present invention is only about a passive electroluminescent device, the present invention can also be applied to an active electroluminescent device. In an active electroluminescent device, the first electrode has a pixel structure, and each individual pixel electrode is driven by at least two thin film transistors and a capacitor. Next, an embodiment of the present invention will be explained. The embodiment consists of a possible implementation example. . Water-like colloidal solution of silicon dioxide has a weight ratio of silica to silicon dioxide. This solution uses deionized water to dilute the gel with a particle size = nanometer (LeVasil © VPAC 4056). Shaped solution mountain. The obtained water-like gelatinous solution is passed through a thin film with a pore size of:, ', 1 meter. For the substrate i, a U-mm thick glass was used. The glass plate was sandwiched on a rotary sputtering device, and then coated with water-like oxygen gelatin. In this process, the substrate is rotated at 200 rpm 'and during the rotation, the solution is dried by an infrared lamp, and the coated substrate is placed in an oven , And then exposed to 3 Li at a temperature of 15 Gt ^ dioxy-cut porous layer 2 (tightly adhere to the substrate, with a layer thickness of 200 nanometers. 5 Hai coated substrate 1 series leads to | 丨 嗤 $ CTrr i,, ¥ Μ Inkjet printer, first, a method of obtaining black ink—a black matrix structure is arranged on the porous layer 2. Lai, L, and green ink are successively arranged so that in addition to the inner color In addition to the matrix structure, a cross-color device structure is obtained. An i-nano-thick indium tin oxide layer system is arranged on the porous layer 2 as the first electrode 3, and then the structure is performed after the autumn. Next, continuous ... Nano-thick 86227 200415935 polyethyiene dioxythiophene (PDOT) layer (as the hole conduction layer) and an 80 nm-thick electroluminescent layer 4 can be obtained. The electroluminescent layer 4 is divided into emission Red, green, and blue color pixels. These red-emitting pixels include poly [{9-ethyl_3 , 6_bis (2-ammonium diethenyl) 叶 叶峻基}] Alternative copolymerization- [2methoxyethylhexyloxy] ^ cardiac phenyl]], these blue-emitting pixels include poly [9 , 9_dihexylidene-2,7-oneyl] and these green light emitting pixel systems contain poly [{9 dioxin-2,7-diethylidene_phenylene group} _alternative copolymerization_ {2_methoxy_5_ (2-ethylhexyloxy-1,4-phenylene)}. The pixels emitting red light are located opposite to the pores of the porous layer 2 containing the red ink. Similarly, the pixels emitting green light and the pixels emitting blue light are respectively located opposite to the pores of the porous layer 2 containing green ink and blue ink. The porous layer 2 contains black ink-like strips that divide the pixels into triads, each triad having a red pixel, a green pixel, and a blue pixel. The second electrode 5 is arranged on the electroluminescent layer 4, and the electrode is composed of a 5 nm thick barium layer and a 200 nm thick aluminum layer. The obtained electroluminescent device exhibits improved daylight contrast and a high spectral saturation of these primary colors. [Brief description of the drawings] FIG. 1 is a cross-sectional view of a field electroluminescent device; and FIG. 2 illustrates a segmented porous layer having colored materials in the pores. [Illustration of Symbols in the Drawings] 1 Substrate 86227 -14- 200415935 2 Porous layer 3 —First electrode 4 Field emission layer 5 —Second electrode -15-86227